Insider trading

Period: 120 months Stock: NGS Plan: Not on a plan × + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

88 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

88 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

88 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

88 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
88 decisions over 120 months Remove this filter
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
88 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

88 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
11 Dec 2025
Sold at will
$335.40K 10,000 at 33.54
3.5%
Not planned
10 Dec 2025
Sold at will
$331.60K 10,000 at 33.16
3.4%
Not planned
8 Dec 2025
HOLLEY JEAN K Director
Bought 2×
$100.09K 3,125 at 32.03
27.7%
Largest buy in 3 yrs
4 Dec 2025
Sold at will
$642.40K 20,000 at 32.12
6.3%
Not planned
20 Nov 2025
Sold at will
$313.70K 10,000 at 31.37
3.1%
Not planned
19 Nov 2025
Sold at will
$303.10K 10,000 at 30.31
3.0%
Not planned
4 Sep 2025
HOLLEY JEAN K Director
Bought
$99.72K 3,752 at 26.58
92.7%
Largest buy in 3 yrs
14 Aug 2025
HOLLEY JEAN K Director
Bought
$99.15K 4,048 at 24.49
opened
First buy on file
15 May 2025
Sold at will
$622.50K 25,000 at 24.90
5.5%
Not planned
12 Dec 2024
Sold at will
$271.50K 10,000 at 27.15
2.1%
Not planned
26 Aug 2024
Sold at will
$69.98K 3,181 at 22.00
0.6%
Not planned
20 Aug 2024
Sold at will
$103.84K 4,690 at 22.14
0.8%
Not planned
14 Jun 2024
Jacobs Justin Chief Executive Officer
Bought
$47.70K 2,500 at 19.08
691%
First buy on file
1 Dec 2022
Beyer Leslie Ann Director
Sold, plan not stated
$33.15K 3,000 at 11.05
26.9%
7 Jun 2022
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$58.77K 3,918 at 15.00
0.8%
7 Jun 2022
Hazlett James R VP - Technical Services
Sold, plan not stated
$14.58K 972 at 15.00
1.3%
31 May 2022
Hazlett James R VP - Technical Services
Sold, plan not stated
$33.69K 2,405 at 14.01
3.2%
27 May 2022
Hazlett James R VP - Technical Services
Sold, plan not stated
$8.36K 595 at 14.05
0.8%
11 Apr 2022
CHISHOLM JOHN Director
Sold, plan not stated
$5.90K 500 at 11.79
5.4%
1 Apr 2022
CHISHOLM JOHN Director
Sold, plan not stated
$16.02K 1,500 at 10.68
13.9%
30 Mar 2022
CHISHOLM JOHN Director
Sold, plan not stated
$8.13K 700 at 11.61
6.1%
29 Mar 2022
CHISHOLM JOHN Director
Sold, plan not stated
$27.62K 2,300 at 12.01
16.7%
2 Mar 2022
Hazlett James R VP - Technical Services
Sold, plan not stated
$4.20K 300 at 14.00
0.4%
1 Mar 2022
Hazlett James R VP - Technical Services
Sold, plan not stated
$36.11K 2,750 at 13.13
3.3%
6 Oct 2021
Hazlett James R VP - Technical Services
Sold, plan not stated
$33.22K 2,750 at 12.08
3.2%
14 Sep 2021
CHISHOLM JOHN Director
Sold, plan not stated
$69.79K 7,000 at 9.97
33.7%
27 Aug 2021
CHISHOLM JOHN Director
Sold, plan not stated
$24.04K 2,515 at 9.56
10.8%
26 Aug 2021
CHISHOLM JOHN Director
Sold, plan not stated
$32.20K 3,485 at 9.24
13.0%
10 Dec 2020
Hazlett James R VP -- Technical Services
Sold, plan not stated
$30.00K 2,500 at 12.00
3.4%
4 Jun 2019
BRADSHAW DAVID L Director
Sold, plan not stated 2×
$50.66K 3,356 at 15.10
13.2%
23 Apr 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$25.11K 1,413 at 17.77
2.9%
22 Apr 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$30.01K 1,687 at 17.79
3.3%
10 Apr 2019
Lawrence G Larry Chief Financial Officer
Sold, plan not stated
$12.79K 701 at 18.25
1.5%
8 Apr 2019
Lawrence G Larry Chief Financial Officer
Sold, plan not stated
$60.77K 3,299 at 18.42
6.6%
1 Apr 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$17.57K 1,000 at 17.57
1.9%
29 Mar 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$17.07K 1,000 at 17.07
1.9%
28 Mar 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$17.14K 1,000 at 17.14
1.9%
27 Mar 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$17.33K 1,000 at 17.33
1.8%
26 Mar 2019
Hazlett James R VP -- Technical Services
Sold, plan not stated
$17.26K 1,000 at 17.26
1.8%
5 Feb 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$46.24K 2,720 at 17.00
0.8%
4 Feb 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$217.87K 12,771 at 17.06
3.8%
31 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$306.00 18 at 17.00
0.0%
30 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$5.92K 348 at 17.00
0.1%
29 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$83.63K 4,905 at 17.05
1.5%
28 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$18.87K 1,110 at 17.00
0.3%
25 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated 2×
$85.25K 4,974 at 17.14
1.5%
24 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$20.49K 1,205 at 17.00
0.4%
23 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$31.77K 1,846 at 17.21
0.6%
22 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$20.98K 1,200 at 17.48
0.4%
18 Jan 2019
Taylor Stephen Charles Chief Executive Officer
Sold, plan not stated
$222.62K 12,444 at 17.89
3.7%
Showing 1–50 of 88. Page 1 of 2 Older →